Trond Myklebust 874f946376 NFS: Fix a regression in the read() syscall ... When invalidating the page cache for a regular file, we want to first sync all dirty data to disk and then call invalidate_inode_pages2(). The latter relies on nfs_launder_page() and nfs_release_page() to deal respectively with dirty pages, and unstable written pages. When commit 9590544694 ("NFS: avoid deadlocks with loop-back mounted NFS filesystems.") changed the behaviour of nfs_release_page(), then it made it possible for invalidate_inode_pages2() to fail with an EBUSY. Unfortunately, that error is then propagated back to read(). Let's therefore work around the problem for now by protecting the call to sync the data and invalidate_inode_pages2() so that they are atomic w.r.t. the addition of new writes. Later on, we can revisit whether or not we still need nfs_launder_page() and nfs_release_page(). Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>		2015-03-03 13:02:29 -05:00
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acpi	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux	2015-02-19 11:28:36 -08:00
asm-generic	OK, this has the big virtio 1.0 implementation, as specified by OASIS.	2015-02-18 09:24:01 -08:00
clocksource
crypto
drm
dt-bindings	The clock framework changes for 3.20 contain the usual driver additions,	2015-02-21 12:30:30 -08:00
keys
kvm
linux	NFS: Fix a regression in the read() syscall	2015-03-03 13:02:29 -05:00
math-emu
media
memory
misc
net	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-02-17 17:41:19 -08:00
pcmcia
ras
rdma
rxrpc
scsi
soc
sound
target	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2015-02-21 13:21:19 -08:00
trace	Merge branch 'lazytime' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-02-17 16:12:34 -08:00
uapi	Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus	2015-02-21 19:41:38 -08:00
video
xen
Kbuild